Add your file from your device.
01Images toolImage file
Image Resizer
Resize to exact pixels or a percentage.
100% FreeBrowser-basedNo watermark
- 1UploadAdd your file from your device.
- 2Choose optionsPick the output settings you need.
- 3ProcessRun the tool in your browser.
Private by designProcessed on your device where possible.
Works on any deviceDesktop, tablet and mobile browsers.
No installationOpen the page and start working.
Always free coreUse the free plan for everyday tasks.
How to use Image Resizer
Pick the output settings you need.
02Run the tool in your browser.
03Save the finished result.
04Your files stay private
Your work is processed locally in your browser where possible and is never added to a Vootkit upload library.
Learn more about privacyResizing is the step most people skip, and it usually shrinks a file more than any quality slider will. If an image is displayed 800 pixels wide, a 4000-pixel-wide file is carrying 25 times the pixels the screen can show.
What Image Resizer does
Scales an image to a width you specify, either keeping the original aspect ratio or forcing an exact width and height. Output can be PNG, JPEG or WebP.
In ratio mode you set the width and the height follows. In exact mode you set both, which will stretch the image if the numbers do not match its shape — useful when a form demands precise dimensions.
Settings and sensible values
| Width / height range | 1–12,000 px |
|---|---|
| Fit modes | Keep aspect ratio (default), or exact width × height |
| Output formats | PNG (default), JPEG, WebP |
| Blog body image | 1200–1600 px wide |
| Full-width hero | ~2000 px |
| Email attachment | 1200 px is plenty |
| Thumbnail | 400–600 px |
Detailed steps
- Drop the image in.
- Set Width (px) to roughly twice the size it will be displayed, so it stays sharp on high-density screens.
- Leave Fit on “Keep aspect ratio” unless something demands exact dimensions.
- Pick a Format — PNG for graphics and screenshots, JPEG or WebP for photographs.
Worth knowing
Order matters: resize first, then compress. Compressing and then resizing means you are shrinking an image that already has artefacts baked in, and those artefacts get resampled along with everything else.
Frequently Asked Questions
Will resizing up make my image sharper?
No. Enlarging invents pixels by interpolating between the ones you have — it makes the image bigger and softer, never more detailed. The detail was never captured.
Why does my image look stretched?
Fit is set to “Exact height too” and the width and height you entered do not match the original proportions. Switch back to “Keep aspect ratio”, or crop to the target shape first.
What width should I use for a website?
About twice the display width. An image shown in an 800px column should be around 1600px so it stays crisp on retina screens, and no larger — beyond that you are paying download cost for pixels nobody sees.
Does this change the file size as well?
Substantially. Pixel count scales with the square of the dimension, so halving the width removes roughly 75% of the pixels. That is usually a bigger saving than any quality setting.
Is Image Resizer free?
Yes. The Vootkit free plan includes 5 tool runs a day. Upgrade to Vootkit Pro for unlimited daily use, an ad-free workspace and saved workflows.
Are my files uploaded?
No. Image Resizer runs entirely in your browser — your file is processed on your own device and never sent to a server. There is nothing for us to store or delete.
Do I need to install anything?
No. Image Resizer works in any modern browser on desktop, tablet or phone. Open the page and start.
How often can I use it? Is there a daily limit?
On the free plan you get 5 tool runs a day. When you reach the limit you'll see a prompt to upgrade, and it resets the next day. Vootkit Pro removes the cap entirely for unlimited daily use.
Recently viewed
This tool processes everything locally in your browser. You can disconnect from the internet after the page loads and it will still work.